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Adaption to new fluka common blocks (E. Futo)
[u/mrichter/AliRoot.git] / ZDC / AliZDC.cxx
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1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/*
17$Log$
18Revision 1.32 2002/10/22 15:35:30 alibrary
19Introducing Riostream.h
20
21Revision 1.31 2002/10/14 14:57:44 hristov
22Merging the VirtualMC branch to the main development branch (HEAD)
23
24Revision 1.28.6.2 2002/07/24 10:10:13 alibrary
25Updating VirtualMC
26
27Revision 1.28.6.1 2002/06/10 15:29:36 hristov
28Merged with v3-08-02
29
30Revision 1.30 2002/06/07 10:19:23 coppedis
31TreeS, TreeD and TreeR for ZDC can be written in a separate file
32
33Revision 1.29 2002/06/04 08:17:04 coppedis
34Reconstruction method improved
35
36Revision 1.28 2002/02/04 09:18:08 coppedis
37Merging and reconstruction code review
38
39Revision 1.26.2.2 2001/11/12 18:41:44 hristov
40All the changes from the head are merged to the release
41
42Revision 1.27 2001/10/21 18:27:45 hristov
43Several pointers were set to zero in the default constructors to avoid memory management problems
44
45Revision 1.26 2001/10/04 14:30:28 coppedis
46Event merging for ZDC
47
48Revision 1.25 2001/10/04 14:24:15 coppedis
49Event merging for ZDC
50
51Revision 1.24 2001/09/26 16:03:41 coppedis
52Merging implemented
53
54Revision 1.23 2001/05/15 13:44:57 coppedis
55Changes in AddHit method
56
57Revision 1.22 2001/05/14 09:53:32 coppedis
58Adding functions ZMin and ZMax
59
60Revision 1.21 2001/04/20 10:05:02 coppedis
61Minor changes
62
63Revision 1.20 2001/03/26 13:39:20 coppedis
64Comment prints
65
66Revision 1.19 2001/03/26 09:10:23 coppedis
67Corrected bug in constructor (fIshunt has to be =1)
68
69Revision 1.18 2001/03/20 08:21:55 coppedis
70ZDC needs PIPE, ABSO, DIPO and SHIL
71
72Revision 1.17 2001/03/16 16:18:03 coppedis
73Correction for superposition of ZDC volumes with MUON arm one
74
75Revision 1.16 2001/03/15 16:01:11 coppedis
76Code review
77
78Revision 1.15 2001/01/26 19:56:27 hristov
79Major upgrade of AliRoot code
80
81Revision 1.14 2000/12/12 13:17:01 coppedis
82Minor corrections suggested by P. Hristov
83
84Revision 1.12 2000/12/01 08:19:01 coppedis
85Adding a message error if ZDC is constructed without DIPO
86
87Revision 1.11 2000/11/30 17:21:03 coppedis
88Introduce hit array fStHits reset only at the end of the event (for digitization)
89
90Revision 1.10 2000/11/22 11:32:58 coppedis
91Major code revision
92
93Revision 1.9 2000/10/02 21:28:20 fca
94Removal of useless dependecies via forward declarations
95
96Revision 1.8 2000/07/10 13:58:01 fca
97New version of ZDC from E.Scomparin & C.Oppedisano
98
99Revision 1.7 2000/01/19 17:17:40 fca
100
101Revision 1.6 1999/09/29 09:24:35 fca
102Introduction of the Copyright and cvs Log
103
104*/
105
106///////////////////////////////////////////////////////////////////////////////
107// //
108// Zero Degree Calorimeter //
109// This class contains the basic functions for the ZDCs; //
110// functions specific to one particular geometry are //
111// contained in the derived classes //
112// //
113///////////////////////////////////////////////////////////////////////////////
114
115#include <stdlib.h>
116#include <Riostream.h>
117
118// --- ROOT system
119#include <TBRIK.h>
120#include <TNode.h>
121#include <TGeometry.h>
122#include <TFile.h>
123#include <TTree.h>
124#include <TDirectory.h>
125#include <TF1.h>
126
127// --- AliRoot header files
128#include "AliZDC.h"
129#include "AliZDCHit.h"
130#include "AliZDCMergedHit.h"
131#include "AliZDCMerger.h"
132#include "AliZDCDigit.h"
133#include "AliZDCReco.h"
134#include "AliDetector.h"
135#include "AliConst.h"
136#include "AliRun.h"
137#include "AliHeader.h"
138
139
140ClassImp(AliZDC)
141
142//_____________________________________________________________________________
143AliZDC::AliZDC()
144{
145 //
146 // Default constructor for the Zero Degree Calorimeter base class
147 //
148
149 fIshunt = 1;
150 fNoShower = 0;
151
152 fMerger = 0;
153 fHits = 0;
154 fNhits = 0;
155
156 fDigits = 0;
157 fNdigits = 0;
158
159 fMergedHits = 0;
160
161 fNRecPoints = 0;
162 fRecPoints = 0;
163
164}
165
166//_____________________________________________________________________________
167AliZDC::AliZDC(const char *name, const char *title)
168 : AliDetector(name,title)
169{
170 //
171 // Standard constructor for the Zero Degree Calorimeter base class
172 //
173
174 fIshunt = 1;
175 fNoShower = 0;
176 fMerger = 0;
177
178 // Allocate the hits array
179 fHits = new TClonesArray("AliZDCHit",1000);
180 gAlice->AddHitList(fHits);
181 // Allocate the merged hits array
182 fMergedHits = new TClonesArray("AliZDCMergedHit",1000);
183
184 // Allocate the digits array
185 fDigits = new TClonesArray("AliZDCDigit",1000);
186
187 fNRecPoints = 0;
188 fRecPoints = 0;
189
190}
191//____________________________________________________________________________
192AliZDC::~AliZDC()
193{
194 //
195 // ZDC destructor
196 //
197
198 fIshunt = 0;
199
200 if(fMerger) delete fMerger;
201
202}
203//_____________________________________________________________________________
204void AliZDC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
205{
206 //
207 // Add a ZDC hit to the hit list.
208 // -> We make use of 2 array of hits:
209 // [1] fHits (the usual one) that contains hits for each PRIMARY
210 // [2] fStHits that contains hits for each EVENT and is used to
211 // obtain digits at the end of each event
212 //
213
214 static Float_t primKinEn, xImpact, yImpact, sFlag;
215
216 AliZDCHit *newquad, *curprimquad;
217 newquad = new AliZDCHit(fIshunt, track, vol, hits);
218 TClonesArray &lhits = *fHits;
219
220 if(fNhits==0){
221 // First hit -> setting flag for primary or secondary particle
222 Int_t primary = gAlice->GetPrimary(track);
223 if(track != primary){
224 newquad->fSFlag = 1; // SECONDARY particle entering the ZDC
225 }
226 else if(track == primary){
227 newquad->fSFlag = 0; // PRIMARY particle entering the ZDC
228 }
229 sFlag = newquad->fSFlag;
230 primKinEn = newquad->fPrimKinEn;
231 xImpact = newquad->fXImpact;
232 yImpact = newquad->fYImpact;
233 }
234 else{
235 newquad->fPrimKinEn = primKinEn;
236 newquad->fXImpact = xImpact;
237 newquad->fYImpact = yImpact;
238 newquad->fSFlag = sFlag;
239 }
240
241 Int_t j;
242 for(j=0; j<fNhits; j++){
243 // If hits are equal (same track, same volume), sum them.
244 curprimquad = (AliZDCHit*) lhits[j];
245 if(*curprimquad == *newquad){
246 *curprimquad = *curprimquad+*newquad;
247 delete newquad;
248 return;
249 }
250 }
251
252 //Otherwise create a new hit
253 new(lhits[fNhits]) AliZDCHit(newquad);
254 fNhits++;
255
256 delete newquad;
257}
258
259//_____________________________________________________________________________
260void AliZDC::AddDigit(Int_t *sect, Int_t digit)
261{
262//
263 AliZDCDigit *newdigit;
264 newdigit = new AliZDCDigit(sect, digit);
265
266// printf("\n AddDigit -> sector[0] = %d, sector[1] = %d, digit = %d",
267// sect[0], sect[1], digit);
268 new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
269 fNdigits++;
270 delete newdigit;
271}
272
273//_____________________________________________________________________________
274void AliZDC::BuildGeometry()
275{
276 //
277 // Build the ROOT TNode geometry for event display
278 // in the Zero Degree Calorimeter
279 // This routine is dummy for the moment
280 //
281
282 TNode *node, *top;
283 TBRIK *brik;
284 const int kColorZDC = kBlue;
285
286 //
287 top=gAlice->GetGeometry()->GetNode("alice");
288
289 // ZDC
290 brik = new TBRIK("S_ZDC","ZDC box","void",300,300,5);
291 top->cd();
292 node = new TNode("ZDC","ZDC","S_ZDC",0,0,600,"");
293 node->SetLineColor(kColorZDC);
294 fNodes->Add(node);
295}
296
297//_____________________________________________________________________________
298Int_t AliZDC::DistancetoPrimitive(Int_t , Int_t )
299{
300 //
301 // Distance from the mouse to the Zero Degree Calorimeter
302 // Dummy routine
303 //
304 return 9999;
305}
306
307//____________________________________________________________________________
308Float_t AliZDC::ZMin(void) const
309{
310 // Minimum dimension of the ZDC module in z
311 return 11600.;
312}
313
314//____________________________________________________________________________
315Float_t AliZDC::ZMax(void) const
316{
317 // Maximum dimension of the ZDC module in z
318 return 11750.;
319}
320
321
322//_____________________________________________________________________________
323 void AliZDC::MakeBranch(Option_t *opt, const char *file)
324{
325 //
326 // Create Tree branches for the ZDC
327 //
328
329 char branchname[10];
330 sprintf(branchname,"%s",GetName());
331
332 AliDetector::MakeBranch(opt);
333
334 const char *cS = strstr(opt,"S");
335
336 if (gAlice->TreeS() && cS) {
337 if(fMergedHits!=0) fMergedHits->Clear();
338 else fMergedHits = new TClonesArray ("AliZDCMergedHit",1000);
339 MakeBranchInTree(gAlice->TreeS(),
340 branchname, &fMergedHits, fBufferSize, file) ;
341 printf("* AliZDC::MakeBranch * Making Branch %s for SDigits\n\n",branchname);
342 }
343
344
345 const char *cD = strstr(opt,"D");
346
347 if (gAlice->TreeD() && cD) {
348 if(fDigits!=0) fDigits->Clear();
349 else fDigits = new TClonesArray ("AliZDCDigit",1000);
350 MakeBranchInTree(gAlice->TreeD(),
351 branchname, &fDigits, fBufferSize, file) ;
352 printf("* AliZDC::MakeBranch * Making Branch %s for Digits\n\n",branchname);
353 }
354
355
356 const char *cR = strstr(opt,"R");
357
358 if (gAlice->TreeR() && cR) {
359 if(fRecPoints==0) fRecPoints = new TClonesArray("AliZDCReco",1000);
360 MakeBranchInTree(gAlice->TreeR(),
361 branchname, &fRecPoints, fBufferSize, file) ;
362 printf("* AliZDC::MakeBranch * Making Branch %s for RecPoints\n\n",branchname); }
363
364}
365
366//_____________________________________________________________________________
367 void AliZDC::MakeBranchInTreeS(TTree *treeS, const char *file)
368{
369 // MakeBranchInTree
370 const Int_t kBufferSize = 4000;
371 char branchname[20];
372 sprintf(branchname,"%s",GetName());
373 MakeBranchInTree(treeS, branchname, &fMergedHits, kBufferSize, file) ;
374 printf("* AliZDC::MakeBranch * Making Branch %s for SDigits\n\n",branchname);
375
376}
377//_____________________________________________________________________________
378 void AliZDC::MakeBranchInTreeD(TTree *treeD, const char *file)
379{
380 // MakeBranchInTree
381 const Int_t kBufferSize = 4000;
382 char branchname[20];
383 sprintf(branchname,"%s",GetName());
384 MakeBranchInTree(treeD, branchname, &fDigits, kBufferSize, file) ;
385 printf("* AliZDC::MakeBranch * Making Branch %s for Digits\n\n",branchname);
386
387}
388//_____________________________________________________________________________
389 void AliZDC::MakeBranchInTreeR(TTree *treeR, const char *file)
390{
391 // MakeBranchInTree
392 const Int_t kBufferSize = 4000;
393 char branchname[20];
394 sprintf(branchname,"%s",GetName());
395 MakeBranchInTree(treeR, branchname, &fRecPoints, kBufferSize, file) ;
396 printf("* AliZDC::MakeBranch * Making Branch %s for RecPoints\n\n",branchname);
397
398}
399//_____________________________________________________________________________
400void AliZDC::Hits2SDigits()
401{
402 printf("\n Entering AliZDC::SDigits2Digits() ");
403
404 //----------------------------------------------------------------
405 if(!fMerger){
406 printf(" ZDC digitization (without merging)\n");
407
408 AliZDCMergedHit *MHit;
409 Int_t j, sector[2];
410 Float_t MHits[7];
411 fNMergedhits = 0;
412
413 TTree *treeH = gAlice->TreeH();
414 Int_t ntracks = (Int_t) treeH->GetEntries();
415 gAlice->ResetHits();
416
417 // Tracks loop
418 for(Int_t itrack=0; itrack<ntracks; itrack++){
419 treeH->GetEvent(itrack);
420 for(AliZDCHit* zdcHit=(AliZDCHit*)this->FirstHit(-1); zdcHit;
421 zdcHit = (AliZDCHit*)this->NextHit()){
422
423 for(j=0; j<2; j++) sector[j] = zdcHit->GetVolume(j);
424 MHits[0] = zdcHit->GetPrimKinEn();
425 MHits[1] = zdcHit->GetXImpact();
426 MHits[2] = zdcHit->GetYImpact();
427 MHits[3] = zdcHit->GetSFlag();
428 MHits[4] = zdcHit->GetLightPMQ();
429 MHits[5] = zdcHit->GetLightPMC();
430 MHits[6] = zdcHit->GetEnergy();
431 }//Hits loop
432
433 MHit = new AliZDCMergedHit(sector, MHits);
434 new((*fMergedHits)[fNMergedhits]) AliZDCMergedHit(*MHit);
435 TClonesArray &sdigits = *fMergedHits;
436 new (sdigits[fNMergedhits]) AliZDCMergedHit(*MHit);
437 fNMergedhits++;
438 delete MHit;
439 }
440 gAlice->TreeS()->Fill();
441 gAlice->TreeS()->AutoSave();
442 gAlice->TreeS()->Reset();
443 }
444 //----------------------------------------------------------------
445 else if(fMerger){
446 printf(" ZDC merging and digitization\n");
447 // ### Initialise merging
448 fMerger -> InitMerging();
449
450 // SDigits tree
451 TTree *treeS = 0;
452 char treeSName[20];
453 sprintf(treeSName,"TreeS%d",fMerger->EvNum());
454 if(gAlice->GetTreeSFile()){
455 gAlice->GetTreeSFile()->cd();
456 treeS = (TTree*)gAlice->GetTreeSFile()->Get(treeSName);
457 }
458 else {
459 treeS = gAlice->TreeS();
460 }
461 if(!treeS){
462 printf("\n ERROR -> Can't find TreeS%d in background file\n",fMerger->EvNum());
463 }
464
465 // ### Get TCA of MergedHits from AliZDCMerger
466 fMergedHits = fMerger->MergedHits();
467 fNMergedhits = fMerger->GetNMhits();
468
469 // Branch address
470 char branchSDname[20];
471 sprintf(branchSDname,"%s",GetName());
472 if(treeS && fMergedHits){
473 TBranch *branchSD = treeS->GetBranch(branchSDname);
474 if(branchSD) branchSD->SetAddress(&fMergedHits);
475 else if(!branchSD) MakeBranchInTreeS(treeS);
476 }
477 AliZDCMergedHit *MHit;
478 TClonesArray &sdigits = *fMergedHits;
479 Int_t imhit;
480 //Merged Hits loop
481 for(imhit=0; imhit<fNMergedhits; imhit++){
482 MHit = (AliZDCMergedHit*) fMergedHits->UncheckedAt(imhit);
483 new (sdigits[imhit]) AliZDCMergedHit(*MHit);
484 }
485 treeS->Fill();
486 treeS->AutoSave();
487 }
488
489}
490
491//_____________________________________________________________________________
492void AliZDC::SDigits2Digits()
493{
494 if(!fMerger){ // Only digitization
495 printf(" ZDC digitization (no merging) \n");
496 fMerger = new AliZDCMerger();
497 fMerger->Digitize(fNMergedhits, fMergedHits);
498
499 char hname[30];
500 sprintf(hname,"TreeD%d",gAlice->GetHeader()->GetEvent());
501 gAlice->TreeD()->Fill();
502 gAlice->TreeD()->AutoSave();
503 gAlice->TreeD()->Reset();
504 }
505 else if(fMerger){ // Merging and digitization
506 printf(" ZDC merging and digitization\n");
507 fMerger->Digitize(fNMergedhits, fMergedHits);
508
509 // Digits tree
510 TTree *treeD = 0;
511 char treeDName[20];
512 sprintf(treeDName,"TreeD%d",fMerger->EvNum());
513 if(gAlice->GetTreeDFile()){
514 treeD = (TTree*)gAlice->GetTreeDFile()->Get(treeDName);
515 }
516 else {
517 treeD = gAlice->TreeD();
518 }
519 if(!treeD){
520 printf("\n ERROR -> Can't find TreeD%d in background file\n",fMerger->EvNum());
521 }
522 // Branch address
523 char branchDname[20];
524 sprintf(branchDname,"%s",GetName());
525 if(treeD && fDigits){
526 TBranch *branchD = treeD->GetBranch(branchDname);
527 if(branchD) branchD->SetAddress(&fDigits);
528 else if(!branchD) MakeBranchInTreeD(treeD);
529 }
530 treeD->Fill();
531 treeD->AutoSave();
532 }
533
534
535}
536//_____________________________________________________________________________
537void AliZDC::Hits2Digits()
538{
539 gAlice->Hits2SDigits();
540 gAlice->SDigits2Digits();
541}
542
543//_____________________________________________________________________________
544void AliZDC::Digits2Reco()
545{
546 printf(" Entering AliZDC::Digits2Reco\n");
547 AliDetector *ZDC = gAlice->GetDetector("ZDC");
548 TClonesArray *ZDCdigits = ZDC->Digits();
549
550 TTree *TD = 0;
551 char treeDame[20];
552 sprintf(treeDame,"TreeD%d",fMerger->EvNum());
553 if(gAlice->GetTreeDFile()){
554 TD = (TTree*)gAlice->GetTreeDFile()->Get(treeDame);
555 }
556 else {
557 TD = gAlice->TreeD();
558 }
559 if(TD){
560 char brname[20];
561 sprintf(brname,"%s",ZDC->GetName());
562 TBranch *br = TD->GetBranch(brname);
563 if(br) br->SetAddress(&ZDCdigits);
564 }
565 else if(!TD) printf(" ERROR -> TreeD NOT found in gAlice object\n");
566
567 Int_t nt = (Int_t) (TD->GetEntries());
568 gAlice->ResetDigits();
569
570 AliZDCDigit *dig;
571 Int_t j, idig, ndigits, ZNraw=0, ZPraw=0, ZEMraw=0;
572 // --- Summing raw ADCs for each detector to obtain total light
573 for(j=0; j<nt; j++){
574 TD->GetEvent(j);
575 ndigits = ZDCdigits->GetEntries();
576 ZNraw=0;
577 ZPraw=0;
578 ZEMraw=0;
579 // --- Loop over event digits
580 for(idig=0; idig<ndigits; idig++){
581 dig = (AliZDCDigit*) ZDCdigits->UncheckedAt(idig);
582 if(dig->GetSector(0) == 1) ZNraw += dig->GetADCValue();
583 else if(dig->GetSector(0) == 2) ZPraw += dig->GetADCValue();
584 else if(dig->GetSector(0) == 3) ZEMraw += dig->GetADCValue();
585 } // Digits loop
586 } // TreeD entries loop
587 printf("\n --- ZNraw = %d, ZPraw = %d, ZEMraw = %d\n",ZNraw, ZPraw, ZEMraw);
588
589 // --- Pedestal subtraction
590 Int_t ZNcorr, ZPcorr, ZEMcorr, MeanPed=50;
591 ZNcorr = ZNraw - 5*MeanPed;
592 ZPcorr = ZPraw - 5*MeanPed;
593 ZEMcorr = ZEMraw - 2*MeanPed;
594 if(ZNcorr<0) ZNcorr=0;
595 if(ZPcorr<0) ZPcorr=0;
596 if(ZEMcorr<0) ZEMcorr=0;
597 printf("\n ZNcorr = %d, ZPcorr = %d, ZEMcorr = %d\n",ZNcorr,ZPcorr,ZEMcorr);
598
599 // --- ADCchannel -> photoelectrons
600 // NB-> PM gain = 10^(5), ADC resolution = 6.4*10^(-7)
601 Float_t ZNphe, ZPphe, ZEMphe, ConvFactor = 0.064;
602 ZNphe = ZNcorr/ConvFactor;
603 ZPphe = ZPcorr/ConvFactor;
604 ZEMphe = ZEMcorr/ConvFactor;
605 printf("\n ZNphe = %f, ZPphe = %f, ZEMphe = %f\n",ZNphe, ZPphe, ZEMphe);
606
607 // --- Energy calibration
608 // Conversion factors for hadronic ZDCs goes from phe yield to TRUE incident
609 // energy (conversion from GeV to TeV is included); while for EM calos
610 // conversion is from light yield to detected energy calculated by GEANT
611 // NB -> ZN and ZP conversion factors are constant since incident spectators
612 // have all the same energy, ZEM energy is obtained through a fit over the whole
613 // range of incident particle energies (obtained with full HIJING simulations)
614 Float_t ZNenergy, ZPenergy, ZEMenergy, ZDCenergy;
615 Float_t ZNphexTeV=329., ZPphexTeV=369.;
616 ZNenergy = ZNphe/ZNphexTeV;
617 ZPenergy = ZPphe/ZPphexTeV;
618 ZDCenergy = ZNenergy+ZPenergy;
619 ZEMenergy = -4.81+0.3238*ZEMphe;
620 if(ZEMenergy<0) ZEMenergy=0;
621 printf(" ZNenergy = %f TeV, ZPenergy = %f TeV, ZDCenergy = %f GeV, "
622 "\n ZEMenergy = %f TeV\n", ZNenergy, ZPenergy,
623 ZDCenergy, ZEMenergy);
624
625 if(ZDCenergy==0)
626 printf("\n\n ### ATTENZIONE!!! -> ev# %d: ZNenergy = %f TeV, ZPenergy = %f TeV, ZDCenergy = %f GeV, "
627 " ZEMenergy = %f TeV\n\n", fMerger->EvNum(), ZNenergy, ZPenergy, ZDCenergy, ZEMenergy);
628
629 // --- Number of incident spectator nucleons
630 Int_t NDetSpecN, NDetSpecP;
631 NDetSpecN = (Int_t) (ZNenergy/2.760);
632 NDetSpecP = (Int_t) (ZPenergy/2.760);
633 printf("\n NDetSpecN = %d, NDetSpecP = %d\n",NDetSpecN, NDetSpecP);
634
635 // --- Number of generated spectator nucleons and impact parameter
636 // --------------------------------------------------------------------------------------------------
637 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
638 /*// Fit results for neutrons (Nspectator n true vs. EZN)
639 TF1 *fZNCen = new TF1("fZNCen",
640 "(-2.116909+sqrt(2.116909*2.116909-4*(-0.00651)*(14.556798-x)))/(2*(-0.00651))",0.,158.5);
641 TF1 *fZNPer = new TF1("fZNPer",
642 "(-34.695134-sqrt(34.695134*34.695134-4*(-0.174780)*(-1562.283443-x)))/(2*(-0.174780))",0.,158.5);
643 // Fit results for protons (Nspectator p true vs. EZP)
644 TF1 *fZPCen = new TF1("fZPCen",
645 "(-1.3217+sqrt(1.3217*1.3217-4*(-0.007934)*(4.742873-x)))/(2*(-0.007934))",0.,58.91);
646 TF1 *fZPPer = new TF1("fZPPer",
647 "(-15.788267-sqrt(15.788267*15.788267-4*(-0.133359)*(-383.800673-x)))/(2*(-0.133359))",0.,58.91);
648 // Fit results for total number of spectators (Nspectators true vs. EZDC)
649 TF1 *fZDCCen = new TF1("fZDCCen",
650 "(-1.867335+sqrt(1.867335*1.867335-4*(-0.004119)*(19.100289-x)))/(2*(-0.004119))",0.,220.4);
651 TF1 *fZDCPer = new TF1("fZDCPer",
652 "(-22.429097-sqrt(22.429097*22.429097-4*(-0.072435)*(-1482.034526-x)))/(2*(-0.072435))",0.,220.4);*/
653 // --------------------------------------------------------------------------------------------------
654 // [1] ### Results from a new production -> 0<b<18 fm (Apr 2002)
655 // Fit results for neutrons (Nspectator n true vs. EZN)
656 TF1 *fZNCen = new TF1("fZNCen",
657 "(-2.287920+sqrt(2.287920*2.287920-4*(-0.007629)*(11.921710-x)))/(2*(-0.007629))",0.,164.);
658 TF1 *fZNPer = new TF1("fZNPer",
659 "(-37.812280-sqrt(37.812280*37.812280-4*(-0.190932)*(-1709.249672-x)))/(2*(-0.190932))",0.,164.);
660 // Fit results for protons (Nspectator p true vs. EZP)
661 TF1 *fZPCen = new TF1("fZPCen",
662 "(-1.321353+sqrt(1.321353*1.321353-4*(-0.007283)*(3.550697-x)))/(2*(-0.007283))",0.,60.);
663 TF1 *fZPPer = new TF1("fZPPer",
664 "(-42.643308-sqrt(42.643308*42.643308-4*(-0.310786)*(-1402.945615-x)))/(2*(-0.310786))",0.,60.);
665 // Fit results for total number of spectators (Nspectators true vs. EZDC)
666 TF1 *fZDCCen = new TF1("fZDCCen",
667 "(-1.934991+sqrt(1.934991*1.934991-4*(-0.004080)*(15.111124-x)))/(2*(-0.004080))",0.,225.);
668 TF1 *fZDCPer = new TF1("fZDCPer",
669 "(-34.380639-sqrt(34.380639*34.380639-4*(-0.104251)*(-2612.189017-x)))/(2*(-0.104251))",0.,225.);
670 // --------------------------------------------------------------------------------------------------
671 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
672 /*// Fit results for b (b vs. EZDC)
673 //TF1 *fbCen = new TF1("fbCen","0.611543+0.052231*x-0.000112*x*x+0.000000374*x*x*x",0.,222.);
674 //TF1 *fbPer = new TF1("fbPer","16.552010-0.023866*x-0.00001*x*x",0.,222.);
675 TF1 *fbCen = new TF1("fbCen","0.612769+0.051929*x-0.0001074*x*x+0.0000003724*x*x*x",0.,225.);
676 TF1 *fbPer = new TF1("fbPer","16.6131016-0.026053*x+0.000006893*x*x",0.,225.);*/
677 // --------------------------------------------------------------------------------------------------
678 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
679 TF1 *fbCen = new TF1("fbCen","-0.056923+0.079703*x-0.0004301*x*x+0.000001366*x*x*x",0.,220.);
680 TF1 *fbPer = new TF1("fbPer","17.943998-0.046846*x+0.000074*x*x",0.,220.);
681 // --------------------------------------------------------------------------------------------------
682 // Evaluating Nspectators and b from ZEM energy
683 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
684 /*TF1 *fZEMn = new TF1("fZEMn","124.2-0.0566*x+0.000006014*x*x",0.,3500.);
685 TF1 *fZEMp = new TF1("fZEMp","81.3-0.03834*x+0.000004359*x*x",0.,3500.);
686 TF1 *fZEMsp = new TF1("fZEMsp","205.6-0.09567*x+0.00001056*x*x",0.,3500.);
687 TF1 *fZEMb = new TF1("fZEMb","15.8-0.02084*x+2.802e-5*x*x-2.007e-8*x*x*x+6.586e-12*x*x*x*x-8.042e-16*x*x*x*x*x",0.,3500.);*/
688 // --------------------------------------------------------------------------------------------------
689 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
690 TF1 *fZEMn = new TF1("fZEMn","126.2-0.05399*x+0.000005679*x*x",0.,4000.);
691 TF1 *fZEMp = new TF1("fZEMp","82.49-0.03611*x+0.00000385*x*x",0.,4000.);
692 TF1 *fZEMsp = new TF1("fZEMsp","208.7-0.09006*x+0.000009526*x*x",0.,4000.);
693 TF1 *fZEMb = new TF1("fZEMb","16.06-0.01633*x+1.44e-5*x*x-6.778e-9*x*x*x+1.438e-12*x*x*x*x-1.112e-16*x*x*x*x*x",0.,4000.);
694
695 Int_t NGenSpecN=0, NGenSpecP=0, NGenSpec=0;
696 Double_t ImpPar=0;
697 // Cut value for Ezem (GeV)
698 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
699 //Float_t EZEMCut = 360.;
700 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
701 Float_t EZEMCut = 420.;
702 Float_t DeltaEZEMSup = 690.;
703 Float_t DeltaEZEMInf = 270.;
704 if(ZEMenergy > (EZEMCut+DeltaEZEMSup)){
705 NGenSpecN = (Int_t) (fZNCen->Eval(ZNenergy));
706 NGenSpecP = (Int_t) (fZPCen->Eval(ZPenergy));
707 NGenSpec = (Int_t) (fZDCCen->Eval(ZDCenergy));
708 ImpPar = fbCen->Eval(ZDCenergy);
709 //printf(" fZNCen = %f, fZPCen = %f, fZDCCen = %f\n",fZNCen->Eval(ZNenergy),
710 // fZPCen->Eval(ZPenergy),fZDCCen->Eval(ZDCenergy));
711 }
712 else if(ZEMenergy < (EZEMCut-DeltaEZEMInf)){
713 NGenSpecN = (Int_t) (fZNPer->Eval(ZNenergy));
714 NGenSpecP = (Int_t) (fZPPer->Eval(ZPenergy));
715 NGenSpec = (Int_t) (fZDCPer->Eval(ZDCenergy));
716 ImpPar = fbPer->Eval(ZDCenergy);
717 //printf(" fZNPer = %f, fZPPer = %f, fZDCPer = %f\n",fZNPer->Eval(ZNenergy),
718 // fZPPer->Eval(ZPenergy),fZDCPer->Eval(ZDCenergy));
719 }
720 else if(ZEMenergy >= (EZEMCut-DeltaEZEMInf) && ZEMenergy <= (EZEMCut+DeltaEZEMSup)){
721 NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
722 NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
723 NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
724 ImpPar = fZEMb->Eval(ZEMenergy);
725 //printf(" Nspec ZEM = %f, Nspec ZDC = %f\n",fZEMsp->Eval(ZNenergy),fZDCPer->Eval(ZDCenergy));
726 }
727 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
728 /*if(ZNenergy>158.5) NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
729 if(ZPenergy>58.91) NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
730 if(ZDCenergy>220.4) NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
731 if(ZDCenergy>225.) ImpPar = fZEMb->Eval(ZEMenergy);*/
732 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
733 if(ZNenergy>162.) NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
734 if(ZPenergy>59.75) NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
735 if(ZDCenergy>221.5) NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
736 if(ZDCenergy>220.) ImpPar = fZEMb->Eval(ZEMenergy);
737
738 if(NGenSpecN>125) NGenSpecN=125;
739 else if(NGenSpecN<0) NGenSpecN=0;
740 if(NGenSpecP>82) NGenSpecP=82;
741 else if(NGenSpecP<0) NGenSpecP=0;
742 if(NGenSpec>207) NGenSpec=207;
743 else if(NGenSpec<0) NGenSpec=0;
744 //printf(" NRecSpecN = %d, NRecSpecP = %d, NRecSpec = %d\n",NGenSpecN,NGenSpecP,NGenSpec);
745
746 // --- Number of participants
747 Int_t NPart, NPartTot;
748 NPart = 207-NGenSpecN-NGenSpecP;
749 NPartTot = 207-NGenSpec;
750 //printf(" ### NPart(ZP+ZN) = %d, NPart(ZDC) = %d, b = %f fm\n",NPart,NPartTot,ImpPar);
751 printf(" ### NPart = %d, b = %f fm\n",NPartTot,ImpPar);
752
753 // --- Writing RecPoints TCA
754 // Allocate the RecPoints TCA
755 fRecPoints = new TClonesArray("AliZDCReco",1000);
756 AliZDCReco *reco = new AliZDCReco(ZNenergy,ZPenergy,ZDCenergy,ZEMenergy,
757 NDetSpecN,NDetSpecP,NGenSpecN,NGenSpecP,NGenSpec,NPartTot,ImpPar);
758 new((*fRecPoints)[fNRecPoints]) AliZDCReco(*reco);
759 //fNRecPoints++;
760 //fRecPoints->Dump();
761 delete reco;
762
763 // TreeR
764 TTree *treeR = gAlice->TreeR();
765 if(!treeR) printf("\n ERROR -> Can't find TreeR%d in background file\n",fMerger->EvNum());
766 // Branch address
767 char branchRname[20];
768 sprintf(branchRname,"%s",GetName());
769 if(fRecPoints){
770 TBranch *branchR = treeR->GetBranch(branchRname);
771 if(branchR) branchR->SetAddress(&fRecPoints);
772 else if(!branchR) MakeBranchInTreeR(treeR);
773 }
774 treeR->Fill();
775 treeR->AutoSave();
776 treeR->Reset();
777}
778
779